What is "collocation"?

Collocation is a group of words that usually go together.

A good way to think of collocation is to look at the word collocation:
co - meaning together 
location - meaning place
Collocation are words that are located together.


Examples:
1. make tea
2. run a business
3. high heels
4. Harry Potter
5. cause problems
6. do homework
7. provide care

You CAN say…	…but NOT…
do homework	make homework
long legs	lengthy legs
cause problems	cause solutions
provide care	provide harm

                   http://www.eslweb.org/resources/index.php?topic=1511.0


For more examples of collocations, go to page 56 in WOR2.